Frame for typewriting machine



Dec. 15, 1942.

FRAME FOR TYPEWRITING MACHINES Filed May 4, 194a Paid AB. Gerber by hisAttorney P. A. B. GERBER 2,305,292

Patented Dec. 15, 1942 UNITED STATES FTENT OFFICE FRAME FOR TYPEWRITINGMACHINES Paul August Benjamin Gerber, Dresden, Germany; vested in theAlien Property Custodian 1 Claim.

The present invention refers to a frame for typewriting machines,especially portable typewriters or machines of a like character.

Generally we find in typewriter two kinds of frames, one of cast iron orother cast metal, the other of sheet metal. The present invention refersto the latter kind which presents greater advantages for portabletypewriters because it is lighter in weight and practicallyindestructible.

Such typewriter frames of sheet metal known so far have been assembledusually from several individual parts as for instance a front part, twoside parts and a rear part. They are usually bolted together, a factwhich in itself is a weakness, since bolts are bound to become loose andthus weaken the resistance of the frame and with it naturally the entiremachine. Sometimes they are soldered or welded or folded together.

The frame of my invention is to be made of only one piece and it is thmain object of my invention to present a frame drawn out of only onepiece of sheet metal. p

A second object of my invention is to give to that typewriter frame ashape which by its rigidity and lines very much increases its resistanceand stability as compared with known frames of sheet metal.

A further object of my invention is to render it possible to use the newframe not only as a supporting frame, which carries all component partsof the typewriter, but also to give it lines of an ornamental characterdoing away with a clumsy exterior, thus combining looks and utility.

Other objects will be brought out in the following description and inthe annexed drawing, in which Fig. l is a perspective view of the entireframe of my invention,

Fig. 2 is a sectional view of the frame after it has been cut at centerfrom the front to the rear, and

Fig. 3 is a sectional View of the frame following the line AB, shown inFig. 2, which represents a cut through the center of either right orleft side.

As shown, the frame of my invention consists of a unitary rectangularupstanding sheet metal enclosure I, which is lower at the front and rearand progressively higher at the sides, which terminate in theirmid-portions in rectangular extensions 2. The bottom edge of this frameprojects inwardly at a right-angle to form a rim 3,

which may vary in width in different parts depending upon the preferenceand requirements of the builder. The upper edge of the frame alsoprojects inwardly at a right-angle to form a flange 4, the inner edge ofwhich projects downwardly. Flange 4 constructed in this way and runningunbrokenly all the way around the upper edge of the frame imparts greatstrength and rigidity and enables it to serve as the support for theaxles, shafts and bars which carry all of the mechanical parts of thetypewriter.

Additional supports or reinforcements are not essential but may be used.This construction of the frame allows top cover 5 (shown in dottedlines) to have a simple flat shape supported by flange 4. Formerly thesides of the frame were lower than the top of the machine and.necessitated a top cover which was bent down at the sides to meet thetop of the old style frame. To carry this cover 5 lugs 6 projectinghorizontally from the under inner edge of the flange 4 are provided,which lugs 6 act as a shelf for cover 5 so that it needs not overlap theframe. This gives a good and finished appearance to the typewriter. Atthe side the walls are of an even and unbroken surface and cover 5 maybe so snugly fitted against the inner edge of flange 4 that the spacebetween is negligible and scarcely noticeable.

If additional supports or reinforcements like I, 8 are desired, thesecan be soldered or welded to the inside of the frame to avoid thecutting of holes or other disfigurements of the sidewalls.

I claim:

A frame for a typewriter or other similar machine, comprising arectangular enclosure having vertical walls, all composed of onecontinuous piece of sheet metal, a continuous flange integral with saidwalls and extending inwardly at a rightangle from the bottom edgethereof, a second continuous flange also integral with said wallsextending inwardly at a right-angle from the upper edge thereof and thenrectangularly downward, the front and back walls of said frame beinglower than the side walls, and the side walls sloping upwardly from thefront and back and each being provided with an upstanding rectangularextension in its mid-section, said side walls also being provided withintegral inwardly projecting lugs for supporting a cover, said framealso serving as an ornamental outer casing.

PAUL AUGUST BENJAMIN GERBER.

